Thanks, @chris. I feel like I’m heading down a rabbit hole here, but I grabbed the zwave binding source, changed the command class in the XML for my switch to COMMAND_CLASS_CENTRAL_SCENE, and rebuilt. I found instructions for replacing the binding, but I can’t tell if I will lose my configurations when I do that. I also have no idea if that’s actually even remotely close to being the right way to try your suggestion. How would I know if the rest of the plumbing is going to work? It does sound like the zwave people try to make things compatible, so I would assume that if a device claims to support a particular command class, then generic code in the zwave binding would be able to use that command class, but I’m still new here, so I’m not sure.
Also, I’m happy to be a guinea pig on this. If there are other experiments I should try, to confirm whether the SCENE_ACTIVATION class is really the more appropriate one to use (even though it’s not working currently), let me know.